RHEL 5 : kernel (RHSA-2011:0163)

Updated kernel packages that fix one security issue and three bugs are
now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System
(CVSS) base score, which gives a detailed severity rating, is
available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issue :

* A flaw was found in the sctp_icmp_proto_unreachable() function in
the Linux kernel's Stream Control Transmission Protocol (SCTP)
implementation. A remote attacker could use this flaw to cause a
denial of service. (CVE-2010-4526, Important)

This update also fixes the following bugs :

* Due to an off-by-one error, gfs2_grow failed to take the very last
'rgrp' parameter into account when adding up the new free space. With
this update, the GFS2 kernel properly counts all the new resource
groups and fixes the 'statfs' file correctly. (BZ#666792)

* Prior to this update, a multi-threaded application, which invoked
popen(3) internally, could cause a thread stall by FILE lock
corruption. The application program waited for a FILE lock in glibc,
but the lock seemed to be corrupted, which was caused by a race
condition in the COW (Copy On Write) logic. With this update, the race
condition was corrected and FILE lock corruption no longer occurs.
(BZ#667050)

* If an error occurred during I/O, the SCSI driver reset the
'megaraid_sas' controller to restore it to normal state. However, on
Red Hat Enterprise Linux 5, the waiting time to allow a full reset
completion for the 'megaraid_sas' controller was too short. The driver
incorrectly recognized the controller as stalled, and, as a result,
the system stalled as well. With this update, more time is given to
the controller to properly restart, thus, the controller operates as
expected after being reset. (BZ#667141)

Users should upgrade to these updated packages, which contain
backported patches to correct these issues. The system must be
rebooted for this update to take effect.

Training & Certification

The cookie settings on this website are set to 'allow all cookies' to give you the very best website experience. If you continue without changing these settings, you consent to this - but if you want, you can opt out of all cookies by clicking below.